EP3513053B1 - Système et procédé d'injection d'une solution aqueuse à bord d'un véhicule - Google Patents

Système et procédé d'injection d'une solution aqueuse à bord d'un véhicule Download PDF

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Publication number
EP3513053B1
EP3513053B1 EP17771410.2A EP17771410A EP3513053B1 EP 3513053 B1 EP3513053 B1 EP 3513053B1 EP 17771410 A EP17771410 A EP 17771410A EP 3513053 B1 EP3513053 B1 EP 3513053B1
Authority
EP
European Patent Office
Prior art keywords
tank
aqueous solution
vehicle system
module
pump unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17771410.2A
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German (de)
English (en)
Other versions
EP3513053A1 (fr
Inventor
Stéphane Leonard
Laurent Duez
Beatriz MONGE-BONINI
Joel Op De Beeck
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Plastic Omnium Advanced Innovation and Research SA
Original Assignee
Plastic Omnium Advanced Innovation and Research SA
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Publication of EP3513053A1 publication Critical patent/EP3513053A1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/022—Adding fuel and water emulsion, water or steam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/022—Adding fuel and water emulsion, water or steam
    • F02M25/0221—Details of the water supply system, e.g. pumps or arrangement of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/022—Adding fuel and water emulsion, water or steam
    • F02M25/0221—Details of the water supply system, e.g. pumps or arrangement of valves
    • F02M25/0222—Water recovery or storage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/022—Adding fuel and water emulsion, water or steam
    • F02M25/0221—Details of the water supply system, e.g. pumps or arrangement of valves
    • F02M25/0224—Water treatment or cleaning
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/022—Adding fuel and water emulsion, water or steam
    • F02M25/0227—Control aspects; Arrangement of sensors; Diagnostics; Actuators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/022—Adding fuel and water emulsion, water or steam
    • F02M25/025—Adding water
    • F02M25/028—Adding water into the charge intakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/022—Adding fuel and water emulsion, water or steam
    • F02M25/025—Adding water
    • F02M25/03—Adding water into the cylinder or the pre-combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/02—Feeding by means of suction apparatus, e.g. by air flow through carburettors
    • F02M37/025—Feeding by means of a liquid fuel-driven jet pump
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the invention relates to a system and method for injecting an aqueous solution, preferably demineralised water, on-board a vehicle, and in particular for injecting an aqueous solution into an air intake upstream of a combustion chamber or directly in the combustion chamber.
  • an aqueous solution preferably demineralised water
  • Water injection systems are e.g. known from DE102008015599 A1 , WO2011085830 A1 , EP2419611 B2 , WO2016177556 A1 , DE102014222471 A1 and EP3018331 A1 .
  • General UV treatment is e.g. known from WO2016085385 A1 .
  • a vehicle system for injecting an aqueous solution comprising: a tank for storing an aqueous solution; an injection system configured for injecting aqueous solution from the tank in an injection zone (Z) in the vehicle; and a UV light decontamination device configured for decontaminating the aqueous solution stored in the tank by emitting UV light; wherein the UV light decontamination device is integrated in a module mounted in an opening of the tank; wherein the UV light decontamination device contains a fluid passage and is configured to emit UV light in said fluid passage, and in that the vehicle system is configured for transferring aqueous solution stored in the tank through said fluid passage.
  • aqueous solution By subjecting the aqueous solution to UV light bacteria and algae can be inactivated in order to decontaminate the aqueous solution. In that manner the aqueous solution can be stored in suitable conditions on-board a vehicle for a longer period of time without the need for special additives.
  • the fluid passage may be coated with a photocatalyst, for example titanium dioxide (TiO 2 ).
  • TiO 2 can be used as a catalyst in combination with UV radiation for water decontamination.
  • activated TiO 2 yields photocatalytically generated reactive oxygen species (ROS), such as hydroxyl radicals (-HO), hydrogen peroxide (H 2 O 2 ), and superoxide anion (O 2 - ).
  • ROS reactive oxygen species
  • the generated ROS can decompose inorganic and organic pollutants and inactivate microorganisms, bacteria, fungi, and viruses.
  • the fluid passage may be delimited by a wall made of a UV-resistant material.
  • the tank may be made of a UV-resistant material. More preferably, the tank comprises an outer layer and inner layer made of UV-resistant material.
  • the vehicle system further comprises a pump unit.
  • the pump unit may be arranged inside the tank. By arranging the pump unit in the tank, a compact system is obtained. Further only one line (the feed line) is required from the tank (which may be located e.g. in the back of the car) to the injector (which is typically located close to the engine). It is noted that other lines may be provided but this is not required.
  • the pump unit is arranged in a module mounted in an opening of a wall of the tank. The pump unit may then be arranged either inside the tank or at an external side of the module on the outside of the tank, or partially inside and partially outside of the tank.
  • the pump By arranging the pump in a module mounted in an opening in the tank a compact system is obtained which can be assembled easily. Further only one line (the feed line) is required from the module (which may be located e.g. in the back of the car) to the injector (which is typically located close to the engine). It is noted that other lines may be provided but this is not required.
  • the injection system may comprise an injector and a feed line connecting the pump unit to the injector such that aqueous solution from the tank can be pumped to the injector. Further a return line may connect an outlet of the pump unit with the interior of the tank.
  • the UV light decontamination device may be arranged in the return line. Preferably, the return line is connected to the feed line (i.e.
  • the return line may comprise a valve
  • the UV light decontamination device may be arranged in the return line, downstream or upstream of the valve.
  • the fluid passage is arranged such that the pump unit can transfer aqueous solution through said fluid passage. In this way, the aqueous solution of the tank can be treated continuously with UV light when the pump unit is on whilst the pump unit may at the same time be used for pumping aqueous solution to the injector.
  • the pump unit may be arranged and controlled to be in an injection mode or in a bio-decontamination mode, wherein the pump unit is used for pumping aqueous solution through the fluid passage in the bio-decontamination mode and for pumping aqueous solution to the injector in the injection mode.
  • the module may further comprise any one or more of the following components: a heater, a level sensor, a quality sensor, a filter, a bowl defining a fluid compartment in the tank.
  • the tank has a bottom wall, a top wall and a sidewall connecting the bottom wall with the top wall.
  • the opening is arranged in the bottom wall, wherein, in the mounted position of the tank, the bottom wall corresponds with the lowest face of the tank.
  • the UV light decontamination device is configured to emit UV light from a central location in the tank to a sidewall of the tank.
  • the sidewall may be provided with a reflector. In that manner the whole content of the tank may be decontaminated without having to circulate the aqueous solution.
  • the UV light decontamination device may be configured to emit UV light into the aqueous solution in the bowl, such that aqueous solution pumped out of the bowl to the injector is bio-decontaminated.
  • an inner wall of the bowl may be provided with a reflector.
  • the vehicle system comprises a jet pump having a suction inlet, a pressure inlet and an outlet, said pump unit being connected for pumping aqueous solution along a jet flow path from the tank through the pump unit, through the pressure inlet of the jet pump to the outlet of the jet pump, wherein said outlet is arranged for returning aqueous solution from the suction inlet and from the pressure inlet to the tank.
  • the pump unit may be a feed pump unit connected for pumping aqueous solution directly from the tank or from a compartment in fluid communication with aqueous solution in the tank (e.g. the above described bowl or swirl pot) to a feed outlet for feeding aqueous solution out of the tank or out of the compartment, respectively.
  • the pump unit is also connected for pumping aqueous solution along a flow path from the compartment through the pump unit, through the pressure inlet of the jet pump to the outlet of the jet pump.
  • the outlet is arranged for returning aqueous solution from the suction inlet and from the pressure inlet directly to the tank or to the compartment.
  • the suction inlet may be arranged to suck aqueous solution present in the tank into the compartment.
  • the suction inlet may be arranged to suck liquid from the second tank into the tank associated with the pump unit.
  • the jet pump may be arranged in the same module as the feed pump unit.
  • this module is mounted in an opening of a wall of the tank, more preferably the bottom wall of the tank.
  • the jet pump may be provided as a separate module mounted inside or outside of the tank, and e.g. as a separate module mounted in an opening in a wall of the second tank.
  • the UV light decontamination device may be arranged to operate on fluid flowing in the jet flow path, such as a UV light decontamination device being arranged at one of an inlet of the pump unit, an outlet of the pump unit, a driving line connecting the outlet of the pump unit to the pressure inlet of the jet pump, the pressure inlet of the jet pump, the outlet of the jet pump.
  • the UV light decontamination device may be arranged to operate on fluid flowing to the suction inlet.
  • said suction inlet is connected to a suction line arranged for receiving aqueous solution from one of a compartment in the tank and a second tank for storing an amount of aqueous solution.
  • the UV light decontamination device may then be arranged in the suction line, either inside or outside of the tank.
  • the UV light decontamination device may be arranged to operate on both the fluid flowing in the jet flow path and on fluid flowing to the suction inlet.
  • the UV light decontamination device may be configured to provide the UV light to the fluid in the jet flow path and in the suction line, which is connected to the suction inlet.
  • the aqueous solution contains at least 90% water, more preferably at least 95% water, and most preferably at least 98% water; wherein the aqueous solution is for example demineralized water.
  • a UV light decontamination device will be particularly effective.
  • the invention is especially advantageous for gasoline cars but may also be useful for diesel cars.
  • Figure 1 illustrates a vehicle system for injecting an aqueous solution in an air intake line upstream of a combustion chamber of an internal combustion engine.
  • the aqueous solution may be injected directly in the combustion chamber of the internal combustion engine. More generally the aqueous solution may be injected anywhere as long as the injection is such that the air injected in the combustion chamber is cooled.
  • the aqueous solution is preferably a solution containing at least 90% water, more preferably at least 95% water, and most preferably at least 98% water.
  • the aqueous solution is e.g. demineralized water. In other embodiments an amount of methanol may be added to the aqueous solution to lower the freezing point.
  • the vehicle system of figure 1 comprises a tank 500 for storing the aqueous solution; a pump unit 110 inside tank 500; an air intake line 200 upstream of a combustion chamber 400 of an internal combustion engine; an injector 310 configured for injecting aqueous solution in air intake line 200; a feed line 350 connecting pump unit 110 to said injector 310 such that aqueous solution from the tank 500 can be pumped to the injector 310.
  • the injection system feed line 350 and injector 310 can have a simple configuration. Generally it will be sufficient to have one line (feed line 350) between tank 500 and injector 310. Indeed, if the pump were to be located close to the injector, typically there will be needed a long return line.
  • tank 500 is located in the back of the car, by providing pump 110 inside tank 500 there is a significant reduction in required line length compared to prior art solutions where the pump is located in the engine compartment.
  • the vehicle system as shown in figure 1 may comprise a plurality of injectors 310 configured for injecting aqueous solution in the air intake line 200.
  • at least one feed line 350 is arranged for connecting pump unit 110 to said injectors such that aqueous solution from the tank 500 can be pumped to the corresponding injectors.
  • FIG. 2 illustrates an exemplary embodiment similar to the embodiment of figure 1 , where pump unit 110 is arranged in a module 100.
  • the module 100 is mounted in a opening 550 in the tank 500.
  • Tank 500 has a bottom wall 510, a top wall 520 and a sidewall 530 connecting the bottom wall 510 with the top wall 520.
  • the opening 550 is arranged in the bottom wall 510, wherein, in the mounted position of the tank 500, the bottom wall 510 corresponds with the lowest face of the tank 500.
  • the opening 550 may be arranged in the sidewall 530, in a lower half of the tank 500.
  • pump unit 110 may be arranged in a module 100, outside the tank, see figure 2A .
  • the module is arranged in sidewall 530, in the lower half of tank 500.
  • module 100 of figure 2A may be arranged in bottom wall 510.
  • module 100 may further comprise any one or more of the following components (not shown): a heater for heating the aqueous solution in tank 500; a level sensor for sensing the level of the aqueous solution in tank 500; a quality sensor for measuring the quality of the aqueous solution in tank 500; a filter, optionally integrated in pump unit 110 for filtering the aqueous solution before it is transported through feed line 350; a bio-decontamination device configured for decontaminating the aqueous solution in tank 500 e.g. using UV light; a controller for controlling any one or more of the components of the module 100.
  • a heater for heating the aqueous solution in tank 500
  • a level sensor for sensing the level of the aqueous solution in tank 500
  • a quality sensor for measuring the quality of the aqueous solution in tank 500
  • a filter optionally integrated in pump unit 110 for filtering the aqueous solution before it is transported through feed line 350
  • a bio-decontamination device configured for decontaminating the aque
  • the vehicle system further comprises a return line 360 integrated in the module 100.
  • Return line 360 connects the feed line 350 with the interior of the tank 500.
  • Return line 360 is connected to feed line 350 in module 100.
  • Return line 360 comprises a check valve 160 in order to regulate the return flow.
  • Pump unit 110 has an inlet 111 for receiving aqueous solution from the tank and an outlet 112 connected to feed line 350. It is noted that figures 2 and 2A are schematic drawings and that inlet 111 is preferably located as low as possible in the tank, and more generally below the minimum filling level. Pump unit 110 may comprise e.g. a gear pump.
  • FIG. 3 illustrates a more detailed embodiment of a module 100 adapted for mounting in an opening 550 of bottom wall 510 of tank 500.
  • Module 100 comprises a cylindrical compartment 105, and a pump unit 110 arranged in cylindrical compartment 105.
  • Pump unit 110 comprises a gear pump 113 and a motor 114 (e.g. a BLDC motor).
  • Pump unit 110 has an inlet 111 at the lower end of a cylindrical housing 115 of pump unit 110.
  • a filter 150 is integrated in pump unit 110.
  • the outlet 112 of pump unit 110 is located at a lower end of pump unit 110, below gear pump 113. Outlet 112 is connected to a first portion of feed line 350. This portion of feed line 350 is connected to a return line 360 including a check valve 160.
  • Return line 360 is integrated in module 100 and is located partially below pump unit 110.
  • the outlet of return line 360 is located adjacent to pump unit 110, and returns the aqueous solution into tank 500.
  • a heater 120 is provided adjacent cylindrical compartment 105 of module 100. Heater 120 is preferably an electrical heater.
  • the heater is a flexible electrical heater 120 with flexible tentacles 121 extending in tank 500.
  • non-flexible electrical heating elements e.g. PTC (Positive Temperature Coefficient) heating elements
  • cylindrical housing 115 of pump unit 110 contains a separation wall 116 dividing the housing in an upper compartment for motor 114 and a lower compartment for gear pump 113.
  • Aqueous solution enters the lower compartment of cylindrical housing 115 at the bottom thereof, see inlet 111, passes through filter 150 and leaves the lower compartment at outlet 112.
  • FIG 4 illustrates another detailed embodiment of a module 100 adapted for mounting in an opening 550 of bottom wall 510 of tank 500 in a similar manner as shown in figure 3 .
  • Module 100 comprises compartment 105, and a pump unit 110 arranged in compartment 105.
  • Pump unit 110 may comprise a gear pump 113 and a motor 114.
  • Pump unit 110 may have an inlet (not visible) at the lower end of pump unit 110.
  • the outlet (not visible) of pump unit 110 may be located at a lower end of pump unit 110.
  • the module 100 may comprise a portion of feed line and a return line including a check valve, as in the embodiment of figure 3 .
  • a heater 120 is provided adjacent compartment 105 of module 100, and may be attached to compartment 105. Heater 120 is preferably an electrical heater.
  • the heater is a flexible electrical heater 120 with flexible tentacles 121 extending in tank 500.
  • non-flexible electrical heating elements e.g. PTC heating elements
  • Compartment 105 has an outer wall with a shape which is such that an inner volume is created for receiving the pump unit 110, and a small outer volume 106 for receiving a level sensor 130.
  • the outer wall of compartment surrounds partially level sensor 130 in order to protect the level sensor.
  • FIG. 5 illustrates another detailed embodiment of a module 100 adapted for mounting in an opening 550 of bottom wall 510 of tank 500 in a similar manner as shown in figure 3 .
  • Module 100 comprises a compartment 105, and a pump unit 110 arranged in compartment 105.
  • Pump unit 110 may comprise a gear pump 113 and a motor 114.
  • Pump unit 110 may have an inlet (not visible) at the lower end of pump unit 110.
  • the outlet (not visible) of pump unit 110 may be located at a lower end of pump unit 110.
  • the module 100 may comprise a portion of feed line and a return line including a check valve, as in the embodiment of figure 3 .
  • a heater 120 is provided adjacent cylindrical compartment 105 of module 100. Heater 120 is preferably an electrical heater.
  • the heater is a flexible electrical heater 120 comprising a central portion 125 intended for extending parallel to a wall of the tank 500, and four flaps 126 which may be attached to tank portions on the inside of the tank.
  • Central portion 125 is provided with an opening through which compartment 105 protrudes.
  • Compartment 105 has a shape which is such that an inner volume is created for receiving the pump unit 110, and a further volume 106 for receiving a level sensor 130.
  • the pump unit 110 is configured to be able generate a flow of between 60 and 100 kg/h through the feed line 350. Further, the controller is preferably configured to control pump unit 110 in function of the RPM (Revolutions Per Minute) of the vehicle. When the RPM reaches a predetermined threshold, the pump unit 110 is made to pump with a flow speed within a predetermined range.
  • RPM Revolutions Per Minute
  • gear pump is advantageous for use in exemplary embodiments
  • other pumps e.g. a gerotor pump, a positive displacement pump, a turbine pump, a membrane pump, a piston pump.
  • FIGS 6A and 6B illustrate embodiments of a vehicle system for injecting an aqueous solution.
  • the vehicle system comprises a tank 500 for storing an aqueous solution; an injection system 300 configured for injecting aqueous solution from the tank 500 in an injection zone Z in the vehicle; and a UV light decontamination device 700 configured for decontaminating the aqueous solution stored in the tank 500 by emitting UV light.
  • the UV light decontamination device 700 is arranged in the tank 500, and in the example of figure 6B the UV light decontamination device 700 is arranged outside the tank 500, but in fluid communication with the tank 500 such that aqueous solution runs through the UV light decontamination device 700.
  • the UV light decontamination device 700 contains a fluid passage 720 and is configured to emit UV light in said fluid passage.
  • the vehicle system is then configured for transferring aqueous solution stored in the tank 500 through said fluid passage 720, e.g. using a pump which may be the same pump as the pump 110 used for transporting aqueous solution out of the tank to feed line 350, but may also be a different pump.
  • the same pump 110 is used for pumping fluid to through feed line 350 to an injector 310, and through the UV light decontamination device 700. This is achieved as illustrated by placing the UV light decontamination device 700 in the return line 360 connecting the feed line 350 with the interior of the tank 500.
  • UV light decontamination device 700 is located upstream of valve 160, but this could also be downstream of valve 160.
  • the return line 360 is connected to the feed line 350 in the module 100.
  • the skilled person understands that also other configurations are possible wherein the same pump is used for the feeding of aqueous urea solution to the injector and for the feeding of the UV light decontamination device 700.
  • the fluid passage 720 is delimited by a wall 710 made of a UV-resistant material. UV light sources may be integrated in the wall 710.
  • FIG 8 illustrates an embodiment where the UV light decontamination device 700 is configured to emit UV light in the interior of tank 500.
  • the UV light is emitted upwardly, and in the embodiment of figure 8A the UV light is emitted sideward in the direction of the side wall 530.
  • the UV light decontamination device 700 is configured to emit UV light from a central location in the tank 500 to the sidewall 530 of the tank 500.
  • the tank 500 is preferably made of a UV-resistant material.
  • the tank 500 may comprise an outer layer and inner layer made of UV-resistant material. As illustrated in figures 7A, 8 and 8A , the UV light decontamination device 700 may be integrated in a module 100 mounted in an opening 550 of the tank 500. Also pump unit 110 and return line 360 may be integrated in this module 100.
  • module 100 may further comprise any one or more of the following components (not shown): a heater for heating the aqueous solution in tank 500; a level sensor for sensing the level of the aqueous solution in tank 500; a quality sensor for measuring the quality of the aqueous solution in tank 500; a filter, optionally integrated in pump unit 110 for filtering the aqueous solution before it is transported through feed line 350; a controller for controlling any one or more of the components of the module 100.
  • a heater for heating the aqueous solution in tank 500
  • a level sensor for sensing the level of the aqueous solution in tank 500
  • a quality sensor for measuring the quality of the aqueous solution in tank 500
  • a filter optionally integrated in pump unit 110 for filtering the aqueous solution before it is transported through feed line 350
  • a controller for controlling any one or more of the components of the module 100.
  • module 100 is mounted in an opening arranged in the bottom wall 510 of tank 500, wherein, in the mounted position of the tank 500, the bottom wall 510 corresponds with the lowest face of the tank 500.
  • module 100 it is also possible to mount module 100 in an opening arranged in the sidewall 530, in a lower half of the tank 500.
  • Figure 9 illustrates a vehicle system for injecting liquid, said vehicle system comprising a tank 500 for storing liquid, a module 100 arranged in a opening 550 in a wall of the tank 500; a tubing 170 for transporting a heat exchange fluid, said tubing extending in the tank 500 and being fixed in said module 100; and an electrical heater 120.
  • Figures 9A and 9B illustrate a detailed view of a possible electrical heater and of a module with tubing 170, respectively.
  • the electrical heater 120 is attached to the module 100.
  • the electrical heater may be arranged against an inner wall of the tank.
  • the tubing 170 is sealingly fixed in the module 100.
  • the electrical heater 120 is arranged in an area surrounding the tubing 170.
  • the electrical heater 120 may be arranged above a bottom wall 510 of the tank, in a lower half of the tank, wherein, in the mounted position of the tank 500, the bottom wall 510 corresponds with the lowest face of the tank 500.
  • the electrical heater 120 is a flexible electrical heater comprises a flexible sheet with integrated electrical tracks.
  • the sheet extends in an area around an opening 550 in the wall, typically bottom wall 510 of the tank 500.
  • the flexible sheet may comprise two flexible films, and wherein at least one electrical track is arranged between the two flexible films.
  • the sheet may be a sheet with a central portion 125 extending around the tubing 170 and at least one flap 126 may extend from the central portion 125 in the tank 500. It is noted that there could also be provided a module similar to the module of figure 4 , wherein a tubing 170 is added adjacent the pump unit 110.
  • the flexible electrical heater 120 may comprise a plurality of flexible tentacles 121 extending freely in the tank 500.
  • the module 100 may further comprise a UV light decontamination device, such as a UV light decontamination device 700 of any one of the embodiments shown in Figures 7A, 8 and 8B , wherein the UV light decontamination device 700 is mounted on the module 100 or integrated in the module 100.
  • Figure 10 illustrates a similar embodiment with a tubing 170 and a flexible electrical heater 120.
  • the flexible electrical heater 120 is provided with a number of openings.
  • Components, such as pump unit 110, level sensor 130, quality sensor 140, may be mounted on the module and may protrude through said openings.
  • the tubing 170 may have various shapes.
  • the tubing has a shape which is such that the module 100 can be mounted in an opening 550 in the tank 500 from the outside; in other words tubing 170 should fit through the opening 550.
  • the module 100 may further comprise a UV light decontamination device, such as a UV light decontamination device 700 of any one of the embodiments shown in Figures 7A, 8 and 8B , wherein the UV light decontamination device 700 is mounted on the module 100 or integrated in the module 100.
  • a UV light decontamination device such as a UV light decontamination device 700 of any one of the embodiments shown in Figures 7A, 8 and 8B , wherein the UV light decontamination device 700 is mounted on the module 100 or integrated in the module 100.
  • FIG 11 illustrates a further embodiment with a tubing 170 and an electrical heater 120.
  • two modules 100, 100' are provided.
  • Module 100' carries the tubing 170 and is mounted in the sidewall 530, and module 100 carries electrical heater 120 and a pump 110.
  • Module 100 is mounted in the bottom wall 510 of the tank 500.
  • the electrical heater 120 is arranged around the pump unit 110.
  • Module 100 or 100' may further comprise any one or more of the following components: a level sensor, a quality sensor, a filter optionally integrated in pump unit 110, a bio-decontamination device 700 such as a UV light decontamination device.
  • the module 100 may comprise the UV light decontamination device 700 in a similar way as any one of the embodiments shown in Figures 7A, 8 and 8B , wherein the UV light decontamination device is mounted on the module 100 or integrated in the module 100.
  • an electrical heater 120 uses an electrical heater 120 has the advantage that immediate heater power is available reducing the start-up time at cold temperatures.
  • a supply rate of the electrical heater may be between 150 and 350 g/h.
  • the tubing 170 is used for circulating engine coolant.
  • the heater power of tubing 170 will depend on engine heat up speed, and without the electrical heater 120 the start-up time will be much longer.
  • the electrical heater may be controlled by a controller in function of the engine temperature, in order to heat more when the engine temperature is too low and less when the engine temperature is increasing.
  • FIGS 12A and 12B illustrate a perspective view of an exemplary embodiment of a tank of a vehicle system in which the module of figure 5 is arranged.
  • the tank 500 comprises a bottom shell 500b and a top shell 500a.
  • a flexible electrical heater 120 is arranged in the bottom shell 500b and extends over the bottom wall and a portion of the side wall 530.
  • the flexible electrical heater 120 surrounds the compartment 105 of module 100.
  • Attachment pads 505 may be arranged against a side wall 530 of the tank 500.
  • a controller 180 may be provided to control one or more components of the module 100.
  • the upper shell 500a is provided with a filler pipe 540 for filling the tank 500 with aqueous solution.
  • the module 100 shown in Figures 12A and 12B may further comprise a UV light decontamination device, such as a UV light decontamination device 700 of any one of the embodiments shown in Figures 7A, 8 and 8B , wherein the UV light decontamination device 700 is mounted on the module 100 or integrated in the module 100.
  • a UV light decontamination device such as a UV light decontamination device 700 of any one of the embodiments shown in Figures 7A, 8 and 8B , wherein the UV light decontamination device 700 is mounted on the module 100 or integrated in the module 100.
  • FIGS 13 and 14 illustrate schematically further exemplary embodiments of vehicle systems.
  • the vehicle system of figure 13 comprises a tank 500 for storing aqueous solution; a module 100 with first pump unit 110; an injector 310 configured for injecting aqueous solution; a feed line 350' connecting pump unit 110 to said injector 310; and a further pump unit 110' in the feed line 350'.
  • Pump unit 110' and/or pump unit 110 allow aqueous solution from the tank 500 to be pumped to the injector 310.
  • a return line 360' is provided from pump 110' back to the tank 500. This return line 360' comprises a check valve 160'.
  • the module 100 may be embodied according to any one of the above described modules.
  • a heat exchanger 170 for engine coolant may be provided in tank 500 as a separate module or may be included in module 100.
  • Pump unit 110' may be configured to generate the high flows needed when the RPM increases above a certain threshold.
  • a bio-decontamination device 700, 700' such as a UV light decontamination device 700 of any one of the embodiments shown in Figures 7A, 8 and 8B , may be provided in the tank 500 and/or in the return line 360'.
  • the vehicle system of figure 14 comprises a first tank 500 for storing aqueous solution; a module 100 with a first pump unit 110; an injector 310 configured for injecting aqueous solution; a first portion 350a' of a feed line 350' connecting pump unit 110 to a second tank 500' and a second portion 350b' of a feed line 350' connecting second tank 500' to the injector 310; and a further pump unit 110' in the feed line portion 350b'.
  • Pump unit 110' and/or pump unit 110 allow aqueous solution from the tank 500 to be pumped to the injector 310.
  • a return line 360' is provided from second tank 500' back to the tank 500. This return line 360' comprises a check valve 160'.
  • the module 100 may be embodied according to any one of the above described modules.
  • a heat exchanger 170' for engine coolant may be provided in tank 500' as a separate module.
  • Pump unit 110' may be configured to generate the high flows needed when the RPM increases above a certain threshold.
  • a bio-decontamination device 700, 700' such as a UV light decontamination device 700 of any one of the embodiments shown in Figures 7A, 8 and 8B , may be provided in the tank 500 and/or in the return line 360' and/or in the tank 500' (not shown).
  • Tank 500 may be located in the back of the car, and tank 500 and pump unit 110' may be located in the engine compartment.
  • FIG. 15 illustrates a vehicle system storing an aqueous solution L.
  • the vehicle system comprises a first compartment 501 for storing aqueous solution L, a second compartment 502 for storing an aqueous solution L, and a module 100.
  • second compartment 502 is a tank 500
  • first compartment 501 is a bowl integrated in module 100, such that the bowl is positioned in the tank 500.
  • Module 100 is arranged in an opening in a wall of tank 500.
  • Tank 500 is provided with a filler pipe 540 for filling tank 500, and hence also compartment 501, with aqueous solution L.
  • Tank 500 has a bottom wall 510, a top wall 520 and a sidewall 530 connecting the bottom wall 510 with the top wall 520.
  • An opening is arranged in bottom wall 510.
  • bottom wall 510 corresponds with the lowest face of tank 500.
  • Module 100 is mounted in the opening in bottom wall 510 of tank 500, e.g. by welding or by any other suitable connection means, e.g. using a ring-nut system screwed onto a thread on tank 500, or using a closure system of the bayonet type.
  • the opening may be arranged in sidewall 530, in a lower half of the tank 500.
  • Module 100 comprises a feed pump unit 110, a jet pump 800, and a heater 120.
  • Feed pump unit 110 is connected for pumping aqueous solution L from the first compartment 501 to a feed outlet 351.
  • Feed outlet 351 is intended for being connected to a feed line 350 for injecting aqueous solution L by an injector 310, e.g. in an air intake line 200 upstream of a combustion chamber 400 of an internal combustion engine.
  • aqueous solution may be injected directly in combustion chamber 400 of the internal combustion engine. More generally, for the described application, the aqueous solution may be injected anywhere as long as the injection is such that the air injected in combustion chamber 400 is cooled.
  • Feed line 350 extends between feed outlet 351 and injector 310, for feeding injector 310 with aqueous solution out of first compartment 501.
  • Jet pump 800 has a suction inlet 810, a pressure inlet 820 and an outlet 830.
  • Pump unit 110 is further connected for pumping aqueous solution along a jet flow path P.
  • the jet flow path P extends from an inlet 111 of feed pump unit 110 to an outlet 112 of feed pump unit 110 through a driving line 190 between outlet 112 and pressure inlet 820 of jet pump 800, to outlet 830 of jet pump 800.
  • Suction inlet 810 is connected to a suction line 290 arranged for receiving aqueous solution from the second compartment 502.
  • Outlet 830 of jet pump 800 is arranged for returning aqueous solution from suction inlet 810 and from pressure inlet 820 to first compartment 501.
  • the vehicle system further comprises a controller 504 configured for controlling feed pump unit 110.
  • Controller 504 may be configured to pump aqueous solution from second compartment 502 to first compartment 501 when the level of the aqueous solution in first compartment 100 is below a predetermined level.
  • Controller 504 is shown mounted on module 100, but the skilled person understands that it may also be located remotely from module 100.
  • a UV light decontamination device 700 is included in module 100 and is arranged to operate on fluid flowing through the suction line 290. In this way, the fluid being transferred by the jet pump 800 through the suction line 290 is decontaminated by the UV light decontamination device 700.
  • FIG 16 illustrates another vehicle system storing an aqueous solution L.
  • the vehicle system comprises a first tank 500a for storing aqueous solution L, a second tank 500b for storing an aqueous solution L, and a module 100.
  • the module 100 is arranged in an opening in a wall of first tank 500a.
  • First tank 500a is provided with a filler pipe 540 for filling first tank 500a, and via an overflow line 210, also second tank 500b, with aqueous solution L.
  • First tank 500a has a bottom wall 510, a top wall 520 and a sidewall 530 connecting bottom wall 510 with top wall 520.
  • An opening is arranged in bottom wall 510.
  • bottom wall 510 corresponds with the lowest face of first tank 500a.
  • Module 100 is mounted in the opening in bottom wall 510 of first tank 500a, e.g. by welding or by any other suitable connection means.
  • the opening may be arranged in sidewall 530, in a lower half of the tank 500a.
  • Module 100 comprises a feed pump unit 110, a jet pump 800, and optionally also a heater 120 (not shown in figure 3 ).
  • Feed pump unit 110 is connected for pumping aqueous solution L from the first tank 500a to a feed outlet 351 intended for being connected to a feed line 350 as in the embodiment of figure 1 .
  • Jet pump 800 has a suction inlet 810, a pressure inlet 820 and an outlet 830.
  • Feed pump unit 110 is further connected for pumping aqueous solution along a jet flow path.
  • the jet flow path extends from an inlet 111 of feed pump unit 110 to an outlet 112 of feed pump unit 110 through a driving line 190 between outlet 112 and pressure inlet 820 of jet pump 800, to outlet 830 of jet pump 800.
  • Suction inlet 810 is connected to a suction line 290 arranged for receiving aqueous solution from second tank 500b.
  • Outlet 830 of jet pump 800 is arranged for returning aqueous solution from suction inlet 810 and from pressure inlet 820 to first tank 500a.
  • the vehicle system may further comprise a controller (not shown) configured for controlling feed pump unit 110.
  • the controller may be configured to pump aqueous solution from second tank 500b to first tank 500a when the level of the aqueous solution in first tank 500a is below a predetermined level.
  • a UV light decontamination device 700 is mounted on the module 100 and is arranged to operate on fluid flowing through the suction line 290.
  • a UV light decontamination device 700' may be mounted on the module 100 and is arranged to operate on fluid flowing through the jet flow path at the driving line 190.
  • An optional heater may be configured and arranged for heating at least said jet flow path. Further a check valve (not shown) may be included in the jet flow path in a similar manner as described above for figure 15 .
  • First tank 500a may be positioned in a vehicle at a higher level than second tank 500b.
  • first tank 500a and second tank 500b may be positioned at more or less the same height and a filler line 550 may be provided between filler pipe 540 of first tank 500a and second tank 500b.
  • the UV light decontamination device 700 of figures 15 or 16 may be arranged at outlet 830 of jet pump 800 instead of in the suction line 290. Further, in the embodiment of figure 15 , UV light decontamination device 700 may be arranged in the first compartment 501 such that it decontaminates aqueous solution in the first compartment, e.g. UV light decontamination device 700 may be arranged more or less centrally in the first compartment.
  • the jet pump 800 in the embodiment of figure 16 may be arranged outside of first tank 500a, e.g. in a second module mounted in a wall of second tank 500b. In such embodiments the drive line 190 goes from the first tank 500a to the jet pump 800 of the second module of the second tank 500b, and the outlet 830 is connected to a return line going back from the second tank 500b to the first tank 500a.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Physical Water Treatments (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Exhaust Gas After Treatment (AREA)

Claims (13)

  1. Système de véhicule pour injecter une solution aqueuse, ledit système de véhicule comprenant :
    un réservoir (500) pour stocker une solution aqueuse ;
    un système d'injection (300) configuré pour injecter une solution aqueuse à partir du réservoir (500) dans une zone d'injection (Z) dans le véhicule ;
    caractérisé en ce que le système de véhicule comprend
    un dispositif de décontamination par lumière UV (700) configuré pour décontaminer la solution aqueuse stockée dans le réservoir (500) en émettant de la lumière UV ;
    dans lequel le dispositif de décontamination par lumière UV (700) est intégré dans un module (100) monté dans une ouverture (550) du réservoir (500) ;
    dans lequel le dispositif de décontamination par lumière UV (700) contient un passage de fluide (720) et est configuré pour émettre de la lumière UV dans ledit passage de fluide, et en ce que le système de véhicule est configuré pour transférer de la solution aqueuse stockée dans le réservoir (500) à travers ledit passage de fluide (720).
  2. Système de véhicule selon la revendication précédente, comprenant en outre une unité de pompe (110), de préférence à l'intérieur du réservoir (500).
  3. Système de véhicule selon la revendication précédente, dans lequel le système d'injection (300) comprend un injecteur (310) et une ligne d'alimentation (350) reliant l'unité de pompe (110) à l'injecteur (310) de sorte que la solution aqueuse du réservoir (500) peut être pompée vers l'injecteur (310).
  4. Système de véhicule selon l'une quelconque des revendications précédentes, dans lequel le passage de fluide (720) est agencé de sorte que l'unité de pompe (110) peut transférer de la solution aqueuse à travers ledit passage de fluide.
  5. Système de véhicule selon la revendication précédente, dans lequel l'unité de pompe (110) est intégrée dans le module (100).
  6. Système de véhicule selon l'une quelconque des revendications précédentes, comprenant en outre une ligne de retour (360), éventuellement intégrée dans le module (100), ladite ligne de retour (360) reliant une sortie de l'unité de pompe avec l'intérieur du réservoir (500) ; dans lequel le dispositif de décontamination par lumière UV (700) est disposé dans la ligne de retour (360).
  7. Système de véhicule selon les revendications 3 et 6, dans lequel la ligne de retour (360) est reliée à la ligne d'alimentation (350) dans le module (100).
  8. Système de véhicule selon la revendication 6 ou 7, dans lequel la ligne de retour comprend une valve, et dans lequel le dispositif de décontamination par lumière UV (700) est disposé dans la ligne de retour (360), en aval ou en amont de la valve.
  9. Système de véhicule selon l'une quelconque des revendications précédentes, dans lequel le module (100) comprend en outre un ou plusieurs des composants suivants : un chauffeur (120, 170), un capteur de niveau (130), un capteur de qualité (140), un filtre (150), un bol (501) définissant un compartiment de fluide dans le réservoir.
  10. Système de véhicule selon l'une quelconque des revendications précédentes, dans lequel le réservoir (500) a une paroi inférieure (510), une paroi supérieure (520) et une paroi latérale (530) reliant la paroi inférieure (510) à la paroi supérieure (520), dans lequel l'ouverture est agencée dans la paroi inférieure (510), dans lequel, en position montée du réservoir (500), la paroi inférieure (510) correspond à la face la plus basse du réservoir (500).
  11. Système de véhicule selon l'une quelconque des revendications précédentes, dans lequel le dispositif de décontamination par lumière UV (700) est configuré pour émettre de la lumière UV depuis un emplacement central dans le réservoir vers une paroi latérale (530) du réservoir, dans lequel la paroi latérale (530) est de préférence munie d'un réflecteur.
  12. Système de véhicule selon l'une quelconque des revendications précédentes, comprenant en outre une pompe à jet (800) ayant une entrée d'aspiration (810), une entrée de pression (820) et une sortie (830), ladite unité de pompe étant connectée pour pomper une solution aqueuse le long d'un trajet d'écoulement de jet (111, 112, 190, 820, 830) du réservoir (500) à travers l'unité de pompe (110), à travers l'entrée de pression (820) de la pompe à jet jusqu'à la sortie (830) de la pompe à jet (800), ladite sortie (830) étant agencée pour renvoyer la solution aqueuse de l'entrée d'aspiration (810) et de l'entrée de pression (820) au réservoir (500) ; dans lequel le dispositif de décontamination par lumière UV est agencé pour fonctionner sur du fluide s'écoulant dans le trajet d'écoulement de jet et/ou pour fonctionner sur du fluide s'écoulant vers l'entrée d'aspiration.
  13. Système de véhicule selon la revendication précédente, dans lequel ladite entrée d'aspiration (810) est connectée à une conduite d'aspiration (290) agencée pour recevoir de la solution aqueuse provenant de l'un parmi : un compartiment dans le réservoir (502) ; un second réservoir (500b) pour stocker une quantité de solution aqueuse.
EP17771410.2A 2016-09-16 2017-09-18 Système et procédé d'injection d'une solution aqueuse à bord d'un véhicule Active EP3513053B1 (fr)

Applications Claiming Priority (4)

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EP16189285 2016-09-16
EP16306609 2016-12-02
EP16204045 2016-12-14
PCT/EP2017/073496 WO2018050893A1 (fr) 2016-09-16 2017-09-18 Système et procédé d'injection de solution aqueuse à bord de véhicule

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EP3513053A1 EP3513053A1 (fr) 2019-07-24
EP3513053B1 true EP3513053B1 (fr) 2021-06-30

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DE102018200091A1 (de) * 2018-01-04 2019-07-04 Robert Bosch Gmbh Wassereinspritzvorrichtung für eine Brennkraftmaschine und Verfahren zur Wassereinspritzung
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EP3594463A1 (fr) 2018-07-13 2020-01-15 Plastic Omnium Advanced Innovation and Research Procédé de décontamination d'un réservoir d'automobile, procédé de fonctionnement d'un réservoir d'automobile, utilisation d'un capteur à ultrasons pour la décontamination d'un réservoir et réservoir d'automobile
DE102018217182B4 (de) * 2018-10-08 2020-06-04 Continental Automotive Gmbh Wasserfilter, Wasserfördereinheit, Wasservorratsbehälter, Wassereinspritzsystem, Verbrennungsmotor und Fahrzeug
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CN109715929B (zh) 2022-02-18
US20190203664A1 (en) 2019-07-04
CN109715929A (zh) 2019-05-03
WO2018050893A1 (fr) 2018-03-22
EP3513053A1 (fr) 2019-07-24
WO2018050894A1 (fr) 2018-03-22
US10941730B2 (en) 2021-03-09

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